Refrigeration condensing mechanism



Patented Oct. 15, 1929 UNITED STATES PATENT' OFFICE THOMAS J. LITLE, .13., OF DETROIT, MIGHIGAN, ASSIGNOR TO COIELAND PRODUCTS, INC., DETROIT, MICHIGAN, A. CORPORATION OF MICHIGAN REFRIGERATION CONDENSING MECHANISM Application filed June 14,

it is the primary object of my invention to provide a cheaply constructed and effective condensing apparatus for a refrigerating machine.

It is a further object of my invention to provide a condenser for a refrigerating machine in which the condensing process may be accelerated by forced circulation of air without the expenditure of more power than is customarily used to operate) the refrigerating ma chine.

With these and other objects in view, my invention consists in the arrangement, combination and construction of the various parts of my improved device as described in the specificatiomclaimed in my claims and shown in the accompanying drawing, in which:

Fig. 1 is a side elevation of the motor, compressor and condenser embodying my invention, mounted upon a refrigerator cabinet, the portion of the cabinet shown being in section.

Fig. 2 is a perspective yiew of my improved condenser.

Fig. 3 is a partial cross section of one wall of my improved device taken on line 33 of Fi 2.

l fhave shown the motor 1, the compressor 2 and the condenser 3 of a refrigerating unit mounted upon a refrigerator cabinet 4. The

- 30 motor 1 drives the compressor 2 which draws the gasified refrigerant from the expansion coil (not shown) through pipe 5, compresses it and passes it into the condenser 3 through pipe 6 where it is condensed and then passes back to the expansion chamber through pipe 7.- The condenser 3 is constructed by imposing a metal sheet 8 over the surface of another metal sheet 9. The surfaces of the metal sheets 8 and 9 are channeled adjacent their lateral edges as shown at 10 in Fig.3 so

that when sheet 8 is imposed over the surface of sheet 9 the channeled surfaces adjacent the edges of the sheets 8 and 9 extend away from 'each other and so provide an appreciable space 10 between that part of the surfaces of said sheets adjacent their lateral edges. The

lateral edges of the sheets 8 and 9 are then sealed together by a welding as at 11 and the inner surfaces of the said sheets8 and 9 are joined together at intervals by spot-welding 1926. Serial No. 115,794.

. edges and are adapted to receive the fittings necessary to secure pipes therein, thus giving access to the spaces 10 between the surfaces of said sheets. In manufacture, the opening 13 is temporarily closed and pressure exerted through opening 14 to expand the inner surfaces of sheets 8 and 9 between the spot-welds 12 thus providing connecting spaces between the surfaces of said sheets and forming a condensing chamber between the sheets 8 and 9. The combined sheets 8 and 9 are then bent into a rectangular or circular form and their ends are joined as at 15 thus forming a chimneylike structure open at the top and bottom. The lower part of one side of the rectangular or circular form thus constructed is then cut away as shown in Fig. 2 at 50, so as to permit the entry of air into the lower part of said form which may circulate within said form ably sealed by welding or the like. The motor 1 is placed in front of the opening 50 in the lower side of the form as shown in Fig. 1,

and a fan 16 is attached to the pulley shaft of the motor 1 adjacent the opening in the lower side of the form. The pipe '6 is then connected to opening 13 and the pipe 7 to the opening 14. The construction of the condenser 3 as described permits the circulation of gaseous or liquid refrigerant between the innersurfaces of the sheets 8 and 9. The motor 1 with the fan 16 is affixed thereto operates to force a current of air through the opening in the lower side of the form which accelerates the condensation of the gaseous refrigerant introduced into the condenser 3 from compressor 2 through pipe 6 and opening 13. The condensed refrigerant flows to the bottom of the condenser and is carried to said sheets being joined together at intervals,

and the sheets being bent to form a chimney effect.

2. A refrigeration system condensing device comprismg superposed sheets of metal spaced apart and having their edges sealed to form an enclosure between them, the faces of said sheets being joined together at intervals, the sheets being bent to form a chimney effect and means for directing a draft of air into the space forming the chimney center.

3. A refrigeration system condensing device comprising superposed sheets of metal spaced apart and having their edges sealed to form an enclosure between them, the faces of said sheets being joined together at intervals, the sheets being bent to form a chimney effect, a portion of the sheets being cut away at a point adjacent the bottom of the chimney and means for directing adraft of air through the same into the chimney.

4. A refrigeration system condensing device comprising superposed sheets of metalspaced apart and having their edges sealed and their faces joined together at intervals, said connected sheets being provided with an elongated channel at one portion thereof to form a header for incoming refrigerant, and

an intake opening provided in said channel,

and means for conducting refrigerant from between said sheets.

' inlet to the header and an inlet from the resaid sheets being bent fectand provided with an elongated channel ceiver.

6. -A refrigeration system condensing device comprising superposed sheets of metal spaced apart and having their edges sealed and their faces joined together at intervals,

to form a chimney efbetween them alon the top of the chimney to form a header for Incoming refrigerant, and

means for conducting refrigerant from between said sheets.

7 A refrigeration system condensing device comprising superposed sheets of metal spaced apart and having their edges sealed and their faces joined together at intervals, said sheets being bent to form a chimney effect and provided with an elongated channel between them-along the top of the chimney and another similar channel along the bottom thereof to form, respectively, a header for the incoming refrigerant and a receiver for outgoing refrigerant, an inlet to the header and an outlet from the receiver'. 7

8. A refrigerating system condenser com prising a pair of generally spaced superposed sheets of metal sealed together at their edges and having opposite side edges thereof secured together to form a hollow structure open at its top, at least one side of said structure formed to permit the passage of air to or from the interior thereof adjacent its lower edge, and refrigerant inlet and outlet means leading to the space between said sheets.

9. A refrigerating system condenser comprising a pair of generally spaced superposed sheets of metal sealed together at their edges and having opposite side edges thereof secured together to form a hollow structure open at its top and bottom, said condenser adapted to be supported on a horizontal surface by direct contact therewith, and at least one of the sides of said condenser being formed to permit the flow of air between the interior and exterior of said condenser adjacent the lower edge thereof.

- THOMAS J. LITLE, JR.

rigerant, and an 

